Yes. Once the data package is activated, you will get a "your device has been registered on the wireless network".
At which point, go to the link and create an account.
If the PIN is released, you'll be able to setup no problem.
If there's an error message, the PIN is still registered with a different account and the previous owner will need to talk to their original carrier about it.
"That's it then. Cancel the kitchen scraps for lepers and orphans, no more merciful beheadings... and call off Christmas."